Air cleaner for automobiles and the like



1,635,007 y 5 v 1927- F. s. OREM AIR CLEANER FOR AUTOMOBILES AND THE LIKE Filed Feb. 6, 1926 A Exedem'c Stmimer 02mm,

dig 8.

as right of Fig. 2.

'Pa tented JuIy S, 19127. j I i 2 I UNITEDSTATES PATENT o F c FREDERICK STRATTNER OREM, OF BAL'ITMORE, MARYLAND.

AIR CLEANER FOR AUTOMOBILES AND THE LIKE. Application filled February 6, 1926. Serial'No. 86,532.

My invent ion is an air cleaner for remov- The central unit 9 is provided with an iming dust from the air entering the carperforate head. 15 mounted on a rod 16 buretor and crankcase of an automobile enwhich is supported in an arm 17 extending gine, and one object of the invention is to across the front of the device and connected provide a filtering arrangement which will at its ends with a ring 18 which embraces 60 prevent filtering material from becoming the right hand end of the casing 8.. This clogged with dust, thereby eliminating the arm, together with the'ring is held in place necessity of cleaning this material. on the rod 16 by a wing nut' 19 engaging the Other objects of the invention will be apscrew thread of the rod. Thefiltering maparent from the following descrlption. 'terial which is composed of felt is held be- 65 The invention consists in the features and tween the head and a plate 20, the said combination and arrangement'of parts hereplate at its inner portion being held by a inafter described and particularly pointed flange 21 of a sleeve 22 mounted on the rod out'in the claims. 16 and having its end turned over at 23 upon 15 In the drawing forming a part of this the outer side of the head 15. The plate sp cification clamps the filtering material between itself Figure 1 represents a side view of a conand the head 15 and also clamps the wire ventional form of engine with my improvenetting 24 in place so that'this will afford a ni'entcombined therewith. support for the filtering material. 30 Fig. 2 is a longitudinal sectional view of At the left hand end of the unit 9 the wire the air cleaner device. netting and the filtering material are held Fig.3 is an end view looking fromthe' left between a ring 25 and an inner ring 26, of Fig. 2, and V which latter is of U-shape in cross section ig. 4 is an end'view looking from the and has its outer portion 27 bearing upon v the inturned flange 28 of the ring 25. Figs. 5,. 6 and 7 represent details of a The lefthand end of the rod 16 is prohood. vided wit-h a forked-shape support 29, the In these drawings l'indicates a fan of arms of which are connected with the ring ordinary construction in front of the engine, 30 in which ring the collar 11 is supported 0 indicated generally at 2. 3 indicates genby its. flanged end at 31. This ring 30 is $5 erally the carburetor of any ordinary type. provided with ears, one of which is shown at The aircleaner 4 is located in rear of the 32 for afi'ording a-bearing support for the fan' to receive the air currents therefrom, U-shape ring 26. e

and from this'air cleaner a pipe 5 extends The outer'casing 8 at its lefthand end is with one branch 6 leading to the carburetor supported in a ring 33 which forms a part and the other branch 7 leading to lthe of the plate 34,. This plate is provided with breather. The air cleaning appliance comopeningsat- 14 and there is an adjustable prises an outer casing 8 and a central unit member 35 adapted to be turned by a finger 9, the latter carrying the dust excluding mapiece 36 for regulating the size of the openterial 10 and having a collar ll extending ings at 14 so that the discharge of the curcoaxially therewith, to which the pipe 5 is rent of air passing through the annular joined; The front of the casing is open at 12 space 13 between the inner unit and the cas-f to receive the air from the fan-which passes ing may be regulated to suit conditions.

into the space 13 between the outer casing 8 The forked arm 29 is held to the rod 16 and the dust excluding material 10, and by nuts 37 and there is a nutat 38 forclampsome of this air is discharged from this. an ing the rod 16 and the head 15 and the sleeve nula-r space through the opening or openings 22 together. j 14 at the left hand end of the device, while .In the operation of the device the air from the dust is caught by the dust excluding mathe fan 1 with its load of dust or impurities terial l0 and isprevented from passing to passes into the annular space 13 and by reathe collar 11 and thence to the carburetor son of the suction of the engine, some of the and. breather. .The clean air passes through air will pass through the filtering medium to .the dust excluding material to the collar 11 the carburetor and breather through the cenand thence passes by way of the pipe 5 to trally disposed collar 11. That portion of the carburetor andthe breather. the air which does not pass through the i filtering the device will be self clearing and only.

clean air will gain access to the carburetor and the breather, because this air must pass through the filtering medium to the interior or the central unit 9 from whence it'will pass buretor and breather.

through the collarll to the pipe 5 leading to the carburetor and breather.

The outer casing can be detached from the inner unit 9 by removing the wing nut and the ring or head 18. This will leave the said mner member exposed for any desired purpose.

The inner unit would then comprise the head 15 held on rod 16 by nut 38, fork 29, ring 25, 26-, ring 33, collar 11 and associated parts. If it is desired to detach the head '15 with-the wire netting, felt and rings 25, 26 as one body, the nut 38 is removed in additionto the removal of the parts above referred to.

lVhile I have shown the air cleaner in the position with its front head facing the radiator, I may place the cleaner in other loca tions. h

The dusty air after passing through the radiator enters the cleaner at a velocity determined by the revolutions of the fan or speed of the vehicle.

y The pistons of the motor produce a to and fro action of the air passing through the filtering material (an inspiration and expiration). By this action produced both in the intake of the carburetor and breather,

dusty air adjacent the filterin material is kept in a state of agitation and this dust is carried ofil by the rush of air through the annular space 13 produced by the fan andthe speed of the vehicle, thus preventing the filtering material from becoming clogged. This filtering material is kept taut an is supported by the comparatively wide mesh of the wire netting.

The air in passing through the cleaner into the inner unit through the filtering material changes its direction and is cleared of dust which is arrested by the filtering mate rial so that only clean air reaches the car- As shown in Figs. 5, 6, and 7, when the cleaner is arranged in vertical position, a hood 39 is used as the end head of. the outer casing to deflect the air downwardly througlh the space 13. This hood will be held by wing nut as shown.

apart therefrom,

respect to the The outer casing may be secured to any suitable part of the structure and may be removed leaving room to gain access to the 1 interior unit, or the interior unit may be removed from the outer casing without removing the latter.

I claim:

1. An air cleaner for automobile engines comprising an outer imperforate casing open to the atmosphere at its opposite ends, an air filtering unit within said casin with a space between it and said casing and surrounding the filtering unit, said space providing a conduit for a current of air assed through the open ended casing, whereby said current of air will contact with the filtering unit longitudinally thereof to clear it of dust particles, said filtering unit having a head completely closing its front end and having an outlet from its rear end.

2. An air cleaner for automobile engines comprising an outer cylindrical casing open at its ends to the atmosphere for the passage of air longitudinally therethrough, thecylindrical surface of said casing being imperforate, an inner filtering unlt arranged coaxially with said outer casing and spaced head at one end to act as a complete end closure for said unit, filtering material form-' ing the cylindrical wall of said unit and through which the air passes from said an nular space to the interior of said unit, an open work support for said filtering material and an outlet from the interior of the said filtering unit to supply clean air to the engine, said outlet being coaxially disposed in casing and said unit at the end opposite the headed end of said unit, substantially as described.

3. In combination, an outer casing having a head at one end with openings therethrough, a rod arranged centrally of the said inner unit having a casing and having a nut to clamp the head in place,

' ring, rings between which the filtering material is clamped, supported upon the ring first mentioned, a plate between which an the head the other end of the filtering material is clamped, and a sleeve connecting said plate with the head.

In testimony whereof I alfiz; my signature.

FREDERICK STRATTNER QREM. 

